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Articles by Christopher A. Dosunmu
Total Records ( 2 ) for Christopher A. Dosunmu
Distribution of Heavy Metals in Leaves, Stems and Roots of Fluted Pumpkin (Telfeiria occidentalis)
Edem , Christopher A. Dosunmu , Miranda I. and Bassey Fransisca I.
The distribution of heavy metals in leaves, stems and roots of fluted pumpkin (Telfeiria ocidentalis) was evaluated using chemical analysis. The results show the following sequence Fe (3.14 μg/g) > Cu (0.88 μg/g) > Mn (0.40μg/g) > Pb (0.13μg/g) > Cr (0.08 μg/g) > Zn (0.04μg/g) in the leaves and Cu (1.52 μg/g) > Fe (1.12 μg/g) > Mn (0.20 μg/g) > Zn (0.08 μg/g) > Pb (0.04 μg/g) in the stem with Fe (1.67 μg/g) > Cu (0.53μg/g) > Mn (0.25 μg/g) > Zn (0.09 μg/g) > Pb (0.03μg/g) in the roots. The results also showed that the concentrations of Fe, Mn, Pb and Cr were highest in the leaves, Cu concentration was highest in the stems while that of Zn was highest in the roots. It was also revealed that Fe concentrations was the highest at all the locations in the leaves and roots. While Cu had the highest concentration in the stems.
Determination of Proximate Composition, Ascorbic Acid and Heavy Metal Content of African Walnut (Tetracarpidium conophorum)
Edem , Christopher A. Dosunmu , Miranda I. and Bassey Francesca I.
The proximate composition, ascorbic acid and heavy metal content of (African walnut) Tetracarpidium conophorum were evaluated using chemical analysis. The result of the proximate composition showed the following; moisture (48.70%), carbohydrate (53.20%), crude protein (35.22%), crude fat (6.21%), crude fiber (3.34%) and ash (2.03%).It also contained 53.50mg/100ml of ascorbic acid. The heavy metal concentrations in the fruit is Fe (0.064ppm), Mn (0.012ppm), Cr (0.001ppm), Ni (0.005ppm) while the concentrations of Hg, Pb and Cd were not detected. The results revealed that the T. conophorum is rich in ascorbic acid and carbohydrate with moderate valves of crude protein while the ash content was shown to be very low. This result shows that T. conophorum nut is not polluted with heavy metals since the concentrations of the heavy metals were all below WHO permissible limits. This nut is therefore shown to be safe for public consumption.
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